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地震 ›› 2011, Vol. 31 ›› Issue (1): 107-117.

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并行计算在遥感震害提取中的应用

郑友华, 王晓青, 窦爱霞, 袁小祥   

  1. 中国地震局地震预测研究所, 北京 100036
  • 收稿日期:2010-05-24 修回日期:2010-06-11 出版日期:2011-01-31 发布日期:2021-09-08
  • 作者简介:郑友华(1982-), 男, 江苏镇江人, 2007年在读研究生, 主要从事遥感图像的并行处理等研究。
  • 基金资助:
    国际科技合作项目“地震应急遥感实用化关键技术研究”(2009DFA21610)

Application of Parallel Computing to Seismic Damage Extraction from Remote Sensing Images

ZHENG You-hua, WANG Xiao-qing, DOU Ai-xia, YUAN Xiao-xiang   

  1. Institute of Earthquake Science, CEA, Beijing 100036, China
  • Received:2010-05-24 Revised:2010-06-11 Online:2011-01-31 Published:2021-09-08

摘要: 本文概述了地震应急中遥感应用的现状和并行处理技术在遥感分析处理中的应用。 初步探讨了在遥感震害分析中并行计算技术的应用方案, 并采用比值法和相关系数法, 利用福卫二号卫星遥感数据对汶川8.0级地震造成的北川县城震害进行了震前震后变化检测并行处理。 将结果与专业图像分析处理软件的处理结果进行了分析对比, 在处理效果基本一致的情况下, 得到了较高的加速比, 缩短了遥感影像震害分析处理的时间, 为提高地震应急震害遥感分析处理的速度提供了示范。 最后还对方法的应用效果进行了讨论。

关键词: 并行计算, 遥感, 震害分析

Abstract: This paper outlines the advances in the application of remote sensing technology and parallel computing to earthquake emergency. The application of parallel computing technology to the extraction of earthquake damage from remote sensing images is preliminarily investigated. The parallel computations with ratio method and correlation coefficient method are applied to detect the changes of the town of Beichuan after Wenchuan 8.0 earthquake by using pre-earthquake and post-earthquake remote sensing images acquired by FORMOSAT Ⅱ Satellite. A higher speed and reduced time of image procession have been obtained comparing with that proceeded by the professional image processing software.

Key words: Parallel Computing, Remote Sensing, Earthquake Emegency, Change Detection

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